/**
 * 微信小程序JavaScriptSDK
 * 
 * @version 1.2
 * @date 2019-03-06
 * @author v_ylyue@tencent.com
 */

var ERROR_CONF = {
  KEY_ERR: 311,
  KEY_ERR_MSG: 'key格式错误',
  PARAM_ERR: 310,
  PARAM_ERR_MSG: '请求参数信息有误',
  SYSTEM_ERR: 600,
  SYSTEM_ERR_MSG: '系统错误',
  WX_ERR_CODE: 1000,
  WX_OK_CODE: 200
};
var BASE_URL = 'https://apis.map.qq.com/ws/';
var URL_SEARCH = BASE_URL + 'place/v1/search';
var URL_SUGGESTION = BASE_URL + 'place/v1/suggestion';
var URL_GET_GEOCODER = BASE_URL + 'geocoder/v1/';
var URL_CITY_LIST = BASE_URL + 'district/v1/list';
var URL_AREA_LIST = BASE_URL + 'district/v1/getchildren';
var URL_DISTANCE = BASE_URL + 'distance/v1/';
var URL_DIRECTION = BASE_URL + 'direction/v1/';
var MODE = {
driving: 'driving',
transit: 'transit'
};
var EARTH_RADIUS = 6378136.49;
var Utils = {
/**
* md5加密方法
* 版权所有©2011 Sebastian Tschan，https：//blueimp.net
*/
safeAdd(x, y) {
  var lsw = (x & 0xffff) + (y & 0xffff);
  var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
  return (msw << 16) | (lsw & 0xffff);
},
bitRotateLeft(num, cnt) {
  return (num << cnt) | (num >>> (32 - cnt));
},
md5cmn(q, a, b, x, s, t) {
  return this.safeAdd(this.bitRotateLeft(this.safeAdd(this.safeAdd(a, q), this.safeAdd(x, t)), s), b);
},
md5ff(a, b, c, d, x, s, t) {
  return this.md5cmn((b & c) | (~b & d), a, b, x, s, t);
},
md5gg(a, b, c, d, x, s, t) {
  return this.md5cmn((b & d) | (c & ~d), a, b, x, s, t);
},
md5hh(a, b, c, d, x, s, t) {
  return this.md5cmn(b ^ c ^ d, a, b, x, s, t);
},
md5ii(a, b, c, d, x, s, t) {
  return this.md5cmn(c ^ (b | ~d), a, b, x, s, t);
},
binlMD5(x, len) {
  /* append padding */
  x[len >> 5] |= 0x80 << (len % 32);
  x[((len + 64) >>> 9 << 4) + 14] = len;

  var i;
  var olda;
  var oldb;
  var oldc;
  var oldd;
  var a = 1732584193;
  var b = -271733879;
  var c = -1732584194;
  var d = 271733878;

  for (i = 0; i < x.length; i += 16) {
    olda = a;
    oldb = b;
    oldc = c;
    oldd = d;

    a = this.md5ff(a, b, c, d, x[i], 7, -680876936);
    d = this.md5ff(d, a, b, c, x[i + 1], 12, -389564586);
    c = this.md5ff(c, d, a, b, x[i + 2], 17, 606105819);
    b = this.md5ff(b, c, d, a, x[i + 3], 22, -1044525330);
    a = this.md5ff(a, b, c, d, x[i + 4], 7, -176418897);
    d = this.md5ff(d, a, b, c, x[i + 5], 12, 1200080426);
    c = this.md5ff(c, d, a, b, x[i + 6], 17, -1473231341);
    b = this.md5ff(b, c, d, a, x[i + 7], 22, -45705983);
    a = this.md5ff(a, b, c, d, x[i + 8], 7, 1770035416);
    d = this.md5ff(d, a, b, c, x[i + 9], 12, -1958414417);
    c = this.md5ff(c, d, a, b, x[i + 10], 17, -42063);
    b = this.md5ff(b, c, d, a, x[i + 11], 22, -1990404162);
    a = this.md5ff(a, b, c, d, x[i + 12], 7, 1804603682);
    d = this.md5ff(d, a, b, c, x[i + 13], 12, -40341101);
    c = this.md5ff(c, d, a, b, x[i + 14], 17, -1502002290);
    b = this.md5ff(b, c, d, a, x[i + 15], 22, 1236535329);

    a = this.md5gg(a, b, c, d, x[i + 1], 5, -165796510);
    d = this.md5gg(d, a, b, c, x[i + 6], 9, -1069501632);
    c = this.md5gg(c, d, a, b, x[i + 11], 14, 643717713);
    b = this.md5gg(b, c, d, a, x[i], 20, -373897302);
    a = this.md5gg(a, b, c, d, x[i + 5], 5, -701558691);
    d = this.md5gg(d, a, b, c, x[i + 10], 9, 38016083);
    c = this.md5gg(c, d, a, b, x[i + 15], 14, -660478335);
    b = this.md5gg(b, c, d, a, x[i + 4], 20, -405537848);
    a = this.md5gg(a, b, c, d, x[i + 9], 5, 568446438);
    d = this.md5gg(d, a, b, c, x[i + 14], 9, -1019803690);
    c = this.md5gg(c, d, a, b, x[i + 3], 14, -187363961);
    b = this.md5gg(b, c, d, a, x[i + 8], 20, 1163531501);
    a = this.md5gg(a, b, c, d, x[i + 13], 5, -1444681467);
    d = this.md5gg(d, a, b, c, x[i + 2], 9, -51403784);
    c = this.md5gg(c, d, a, b, x[i + 7], 14, 1735328473);
    b = this.md5gg(b, c, d, a, x[i + 12], 20, -1926607734);

    a = this.md5hh(a, b, c, d, x[i + 5], 4, -378558);
    d = this.md5hh(d, a, b, c, x[i + 8], 11, -2022574463);
    c = this.md5hh(c, d, a, b, x[i + 11], 16, 1839030562);
    b = this.md5hh(b, c, d, a, x[i + 14], 23, -35309556);
    a = this.md5hh(a, b, c, d, x[i + 1], 4, -1530992060);
    d = this.md5hh(d, a, b, c, x[i + 4], 11, 1272893353);
    c = this.md5hh(c, d, a, b, x[i + 7], 16, -155497632);
    b = this.md5hh(b, c, d, a, x[i + 10], 23, -1094730640);
    a = this.md5hh(a, b, c, d, x[i + 13], 4, 681279174);
    d = this.md5hh(d, a, b, c, x[i], 11, -358537222);
    c = this.md5hh(c, d, a, b, x[i + 3], 16, -722521979);
    b = this.md5hh(b, c, d, a, x[i + 6], 23, 76029189);
    a = this.md5hh(a, b, c, d, x[i + 9], 4, -640364487);
    d = this.md5hh(d, a, b, c, x[i + 12], 11, -421815835);
    c = this.md5hh(c, d, a, b, x[i + 15], 16, 530742520);
    b = this.md5hh(b, c, d, a, x[i + 2], 23, -995338651);

    a = this.md5ii(a, b, c, d, x[i], 6, -198630844);
    d = this.md5ii(d, a, b, c, x[i + 7], 10, 1126891415);
    c = this.md5ii(c, d, a, b, x[i + 14], 15, -1416354905);
    b = this.md5ii(b, c, d, a, x[i + 5], 21, -57434055);
    a = this.md5ii(a, b, c, d, x[i + 12], 6, 1700485571);
    d = this.md5ii(d, a, b, c, x[i + 3], 10, -1894986606);
    c = this.md5ii(c, d, a, b, x[i + 10], 15, -1051523);
    b = this.md5ii(b, c, d, a, x[i + 1], 21, -2054922799);
    a = this.md5ii(a, b, c, d, x[i + 8], 6, 1873313359);
    d = this.md5ii(d, a, b, c, x[i + 15], 10, -30611744);
    c = this.md5ii(c, d, a, b, x[i + 6], 15, -1560198380);
    b = this.md5ii(b, c, d, a, x[i + 13], 21, 1309151649);
    a = this.md5ii(a, b, c, d, x[i + 4], 6, -145523070);
    d = this.md5ii(d, a, b, c, x[i + 11], 10, -1120210379);
    c = this.md5ii(c, d, a, b, x[i + 2], 15, 718787259);
    b = this.md5ii(b, c, d, a, x[i + 9], 21, -343485551);

    a = this.safeAdd(a, olda);
    b = this.safeAdd(b, oldb);
    c = this.safeAdd(c, oldc);
    d = this.safeAdd(d, oldd);
  }
  return [a, b, c, d];
},
binl2rstr(input) {
  var i;
  var output = '';
  var length32 = input.length * 32;
  for (i = 0; i < length32; i += 8) {
    output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xff);
  }
  return output;
},
rstr2binl(input) {
  var i;
  var output = [];
  output[(input.length >> 2) - 1] = undefined;
  for (i = 0; i < output.length; i += 1) {
    output[i] = 0;
  }
  var length8 = input.length * 8;
  for (i = 0; i < length8; i += 8) {
    output[i >> 5] |= (input.charCodeAt(i / 8) & 0xff) << (i % 32);
  }
  return output;
},
rstrMD5(s) {
  return this.binl2rstr(this.binlMD5(this.rstr2binl(s), s.length * 8));
},
rstrHMACMD5(key, data) {
  var i;
  var bkey = this.rstr2binl(key);
  var ipad = [];
  var opad = [];
  var hash;
  ipad[15] = opad[15] = undefined;
  if (bkey.length > 16) {
    bkey = this.binlMD5(bkey, key.length * 8);
  }
  for (i = 0; i < 16; i += 1) {
    ipad[i] = bkey[i] ^ 0x36363636;
    opad[i] = bkey[i] ^ 0x5c5c5c5c;
  }
  hash = this.binlMD5(ipad.concat(this.rstr2binl(data)), 512 + data.length * 8);
  return this.binl2rstr(this.binlMD5(opad.concat(hash), 512 + 128));
},
rstr2hex(input) {
  var hexTab = '0123456789abcdef';
  var output = '';
  var x;
  var i;
  for (i = 0; i < input.length; i += 1) {
    x = input.charCodeAt(i);
    output += hexTab.charAt((x >>> 4) & 0x0f) + hexTab.charAt(x & 0x0f);
  }
  return output;
},
str2rstrUTF8(input) {
  return unescape(encodeURIComponent(input));
},
rawMD5(s) {
  return this.rstrMD5(this.str2rstrUTF8(s));
},
hexMD5(s) {
  return this.rstr2hex(this.rawMD5(s));
},
rawHMACMD5(k, d) {
  return this.rstrHMACMD5(this.str2rstrUTF8(k), str2rstrUTF8(d));
},
hexHMACMD5(k, d) {
  return this.rstr2hex(this.rawHMACMD5(k, d));
},

md5(string, key, raw) {
  if (!key) {
    if (!raw) {
      return this.hexMD5(string);
    }
    return this.rawMD5(string);
  }
  if (!raw) {
    return this.hexHMACMD5(key, string);
  }
  return this.rawHMACMD5(key, string);
},
/**
 * 得到md5加密后的sig参数
 * @param {Object} requestParam 接口参数
 * @param {String} sk签名字符串
 * @param {String} featrue 方法名
 * @return 返回加密后的sig参数
 */
getSig(requestParam, sk, feature, mode) {
  var sig = null;
  var requestArr = [];
  Object.keys(requestParam).sort().forEach(function(key){
    requestArr.push(key + '=' + requestParam[key]);
  });
  if (feature == 'search') {
    sig = '/ws/place/v1/search?' + requestArr.join('&') + sk;
  }
  if (feature == 'suggest') {
    sig = '/ws/place/v1/suggestion?' + requestArr.join('&') + sk;
  }
  if (feature == 'reverseGeocoder') {
    sig = '/ws/geocoder/v1/?' + requestArr.join('&') + sk;
  }
  if (feature == 'geocoder') {
    sig = '/ws/geocoder/v1/?' + requestArr.join('&') + sk;
  }
  if (feature == 'getCityList') {
    sig = '/ws/district/v1/list?' + requestArr.join('&') + sk;
  }
  if (feature == 'getDistrictByCityId') {
    sig = '/ws/district/v1/getchildren?' + requestArr.join('&') + sk;
  }
  if (feature == 'calculateDistance') {
    sig = '/ws/distance/v1/?' + requestArr.join('&') + sk;
  }
  if (feature == 'direction') {
    sig = '/ws/direction/v1/' + mode + '?' + requestArr.join('&') + sk;
  }
  sig = this.md5(sig);
  return sig;
},
  /**
   * 得到终点query字符串
   * @param {Array|String} 检索数据
   */
  location2query(data) {
      if (typeof data == 'string') {
          return data;
      }
      var query = '';
      for (var i = 0; i < data.length; i++) {
          var d = data[i];
          if (!!query) {
              query += ';';
          }
          if (d.location) {
              query = query + d.location.lat + ',' + d.location.lng;
          }
          if (d.latitude && d.longitude) {
              query = query + d.latitude + ',' + d.longitude;
          }
      }
      return query;
  },

  /**
   * 计算角度
   */
  rad(d) {
    return d * Math.PI / 180.0;
  },  
  /**
   * 处理终点location数组
   * @return 返回终点数组
   */
  getEndLocation(location){
    var to = location.split(';');
    var endLocation = [];
    for (var i = 0; i < to.length; i++) {
      endLocation.push({
        lat: parseFloat(to[i].split(',')[0]),
        lng: parseFloat(to[i].split(',')[1])
      })
    }
    return endLocation;
  },

  /**
   * 计算两点间直线距离
   * @param a 表示纬度差
   * @param b 表示经度差
   * @return 返回的是距离，单位m
   */
  getDistance(latFrom, lngFrom, latTo, lngTo) {
    var radLatFrom = this.rad(latFrom);
    var radLatTo = this.rad(latTo);
    var a = radLatFrom - radLatTo;
    var b = this.rad(lngFrom) - this.rad(lngTo);
    var distance = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(radLatFrom) * Math.cos(radLatTo) * Math.pow(Math.sin(b / 2), 2)));
    distance = distance * EARTH_RADIUS;
    distance = Math.round(distance * 10000) / 10000;
    return parseFloat(distance.toFixed(0));
  },

  /**
   * 获取location参数
   */
  getLocationParam(location) {
      if (typeof location == 'string') {
          var locationArr = location.split(',');
          if (locationArr.length === 2) {
              location = {
                  latitude: location.split(',')[0],
                  longitude: location.split(',')[1]
              };
          } else {
              location = {};
          }
      }
      return location;
  },

  /**
   * 回调函数默认处理
   */
  polyfillParam(param) {
      param.success = param.success || function () { };
      param.fail = param.fail || function () { };
      param.complete = param.complete || function () { };
  },

  /**
   * 验证param对应的key值是否为空
   * 
   * @param {Object} param 接口参数
   * @param {String} key 对应参数的key
   */
  checkParamKeyEmpty(param, key) {
      if (!param[key]) {
          var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + key +'参数格式有误');
          param.fail(errconf);
          param.complete(errconf);
          return true;
      }
      return false;
  },

  /**
   * 验证参数中是否存在检索词keyword
   * 
   * @param {Object} param 接口参数
   */
  checkKeyword(param){
      return !this.checkParamKeyEmpty(param, 'keyword');
  },

  /**
   * 验证location值
   * 
   * @param {Object} param 接口参数
   */
  checkLocation(param) {
      var location = this.getLocationParam(param.location);
      if (!location || !location.latitude || !location.longitude) {
          var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + ' location参数格式有误');
          param.fail(errconf);
          param.complete(errconf);
          return false;
      }
      return true;
  },

  /**
   * 构造错误数据结构
   * @param {Number} errCode 错误码
   * @param {Number} errMsg 错误描述
   */
  buildErrorConfig(errCode, errMsg) {
      return {
          status: errCode,
          message: errMsg
      };
  },

  /**
   * 
   * 数据处理函数
   * 根据传入参数不同处理不同数据
   * @param {String} feature 功能名称
   * search 地点搜索
   * suggest关键词提示
   * reverseGeocoder逆地址解析
   * geocoder地址解析
   * getCityList获取城市列表：父集
   * getDistrictByCityId获取区县列表：子集
   * calculateDistance距离计算
   * @param {Object} param 接口参数
   * @param {Object} data 数据
   */
  handleData(param,data,feature){
    if (feature == 'search') {
      var searchResult = data.data;
      var searchSimplify = [];
      for (var i = 0; i < searchResult.length; i++) {
        searchSimplify.push({
          id: searchResult[i].id || null,
          title: searchResult[i].title || null,
          latitude: searchResult[i].location && searchResult[i].location.lat || null,
          longitude: searchResult[i].location && searchResult[i].location.lng || null,
          address: searchResult[i].address || null,
          category: searchResult[i].category || null,
          tel: searchResult[i].tel || null,
          adcode: searchResult[i].ad_info && searchResult[i].ad_info.adcode || null,
          city: searchResult[i].ad_info && searchResult[i].ad_info.city || null,
          district: searchResult[i].ad_info && searchResult[i].ad_info.district || null,
          province: searchResult[i].ad_info && searchResult[i].ad_info.province || null
        })
      }
      param.success(data, {
        searchResult: searchResult,
        searchSimplify: searchSimplify
      })
    } else if (feature == 'suggest') {
      var suggestResult = data.data;
      var suggestSimplify = [];
      for (var i = 0; i < suggestResult.length; i++) {
        suggestSimplify.push({
          adcode: suggestResult[i].adcode || null,
          address: suggestResult[i].address || null,
          category: suggestResult[i].category || null,
          city: suggestResult[i].city || null,
          district: suggestResult[i].district || null,
          id: suggestResult[i].id || null,
          latitude: suggestResult[i].location && suggestResult[i].location.lat || null,
          longitude: suggestResult[i].location && suggestResult[i].location.lng || null,
          province: suggestResult[i].province || null,
          title: suggestResult[i].title || null,
          type: suggestResult[i].type || null
        })
      }
      param.success(data, {
        suggestResult: suggestResult,
        suggestSimplify: suggestSimplify
        })
    } else if (feature == 'reverseGeocoder') {
      var reverseGeocoderResult = data.result;
      var reverseGeocoderSimplify = {
        address: reverseGeocoderResult.address || null,
        latitude: reverseGeocoderResult.location && reverseGeocoderResult.location.lat || null,
        longitude: reverseGeocoderResult.location && reverseGeocoderResult.location.lng || null,
        adcode: reverseGeocoderResult.ad_info && reverseGeocoderResult.ad_info.adcode || null,
        city: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.city || null,
        district: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.district || null,
        nation: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.nation || null,
        province: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.province || null,
        street: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.street || null,
        street_number: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.street_number || null,
        recommend: reverseGeocoderResult.formatted_addresses && reverseGeocoderResult.formatted_addresses.recommend || null,
        rough: reverseGeocoderResult.formatted_addresses && reverseGeocoderResult.formatted_addresses.rough || null
      };
      if (reverseGeocoderResult.pois) {//判断是否返回周边poi
        var pois = reverseGeocoderResult.pois;
        var poisSimplify = [];
        for (var i = 0;i < pois.length;i++) {
          poisSimplify.push({
            id: pois[i].id || null,
            title: pois[i].title || null,
            latitude: pois[i].location && pois[i].location.lat || null,
            longitude: pois[i].location && pois[i].location.lng || null,
            address: pois[i].address || null,
            category: pois[i].category || null,
            adcode: pois[i].ad_info && pois[i].ad_info.adcode || null,
            city: pois[i].ad_info && pois[i].ad_info.city || null,
            district: pois[i].ad_info && pois[i].ad_info.district || null,
            province: pois[i].ad_info && pois[i].ad_info.province || null
          })
        }
        param.success(data,{
          reverseGeocoderResult: reverseGeocoderResult,
          reverseGeocoderSimplify: reverseGeocoderSimplify,
          pois: pois,
          poisSimplify: poisSimplify
        })
      } else {
        param.success(data, {
          reverseGeocoderResult: reverseGeocoderResult,
          reverseGeocoderSimplify: reverseGeocoderSimplify
        })
      }
    } else if (feature == 'geocoder') {
      var geocoderResult = data.result;
      var geocoderSimplify = {
        title: geocoderResult.title || null,
        latitude: geocoderResult.location && geocoderResult.location.lat || null,
        longitude: geocoderResult.location && geocoderResult.location.lng || null,
        adcode: geocoderResult.ad_info && geocoderResult.ad_info.adcode || null,
        province: geocoderResult.address_components && geocoderResult.address_components.province || null,
        city: geocoderResult.address_components && geocoderResult.address_components.city || null,
        district: geocoderResult.address_components && geocoderResult.address_components.district || null,
        street: geocoderResult.address_components && geocoderResult.address_components.street || null,
        street_number: geocoderResult.address_components && geocoderResult.address_components.street_number || null,
        level: geocoderResult.level || null
      };
      param.success(data,{
        geocoderResult: geocoderResult,
        geocoderSimplify: geocoderSimplify
      });
    } else if (feature == 'getCityList') {
      var provinceResult = data.result[0];
      var cityResult = data.result[1];
      var districtResult = data.result[2];
      param.success(data,{
        provinceResult: provinceResult,
        cityResult: cityResult,
        districtResult: districtResult
      });
    } else if (feature == 'getDistrictByCityId') {
      var districtByCity = data.result[0];
      param.success(data, districtByCity);
    } else if (feature == 'calculateDistance') {
      var calculateDistanceResult = data.result.elements;  
      var distance = [];
      for (var i = 0; i < calculateDistanceResult.length; i++){
        distance.push(calculateDistanceResult[i].distance);
      }   
      param.success(data, {
        calculateDistanceResult: calculateDistanceResult,
        distance: distance
        });
    } else if (feature == 'direction') {
      var direction = data.result.routes;
      param.success(data,direction);
    } else {
      param.success(data);
    }
  },

  /**
   * 构造微信请求参数，公共属性处理
   * 
   * @param {Object} param 接口参数
   * @param {Object} param 配置项
   * @param {String} feature 方法名
   */
  buildWxRequestConfig(param, options, feature) {
      var that = this;
      options.header = { "content-type": "application/json" };
      options.method = 'GET';
      options.success = function (res) {
          var data = res.data;
          if (data.status === 0) {
            that.handleData(param, data, feature);
          } else {
              param.fail(data);
          }
      };
      options.fail = function (res) {
          res.statusCode = ERROR_CONF.WX_ERR_CODE;
          param.fail(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
      };
      options.complete = function (res) {
          var statusCode = +res.statusCode;
          switch(statusCode) {
              case ERROR_CONF.WX_ERR_CODE: {
                  param.complete(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
                  break;
              }
              case ERROR_CONF.WX_OK_CODE: {
                  var data = res.data;
                  if (data.status === 0) {
                      param.complete(data);
                  } else {
                      param.complete(that.buildErrorConfig(data.status, data.message));
                  }
                  break;
              }
              default:{
                  param.complete(that.buildErrorConfig(ERROR_CONF.SYSTEM_ERR, ERROR_CONF.SYSTEM_ERR_MSG));
              }

          }
      };
      return options;
  },

  /**
   * 处理用户参数是否传入坐标进行不同的处理
   */
  locationProcess(param, locationsuccess, locationfail, locationcomplete) {
      var that = this;
      locationfail = locationfail || function (res) {
          res.statusCode = ERROR_CONF.WX_ERR_CODE;
          param.fail(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
      };
      locationcomplete = locationcomplete || function (res) {
          if (res.statusCode == ERROR_CONF.WX_ERR_CODE) {
              param.complete(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
          }
      };
      if (!param.location) {
          that.getWXLocation(locationsuccess, locationfail, locationcomplete);
      } else if (that.checkLocation(param)) {
          var location = Utils.getLocationParam(param.location);
          locationsuccess(location);
      }
  }
};


class QQMapWX {

  /**
   * 构造函数
   * 
   * @param {Object} options 接口参数,key 为必选参数
   */
  constructor(options) {
      if (!options.key) {
          throw Error('key值不能为空');
      }
      this.key = options.key;
  };

  /**
   * POI周边检索
   *
   * @param {Object} options 接口参数对象
   * 
   * 参数对象结构可以参考
   * @see http://lbs.qq.com/webservice_v1/guide-search.html
   */
  search(options) {
      var that = this;
      options = options || {};

      Utils.polyfillParam(options);

      if (!Utils.checkKeyword(options)) {
          return;
      }

      var requestParam = {
          keyword: options.keyword,
          orderby: options.orderby || '_distance',
          page_size: options.page_size || 10,
          page_index: options.page_index || 1,
          output: 'json',
          key: that.key
      };

      if (options.address_format) {
          requestParam.address_format = options.address_format;
      }

      if (options.filter) {
          requestParam.filter = options.filter;
      }

      var distance = options.distance || "1000";
      var auto_extend = options.auto_extend || 1;
      var region = null;
      var rectangle = null;

      //判断城市限定参数
      if (options.region) {
        region = options.region;
      }

      //矩形限定坐标(暂时只支持字符串格式)
      if (options.rectangle) {
        rectangle = options.rectangle;
      }

      var locationsuccess = function (result) {        
        if (region && !rectangle) {
          //城市限定参数拼接
          requestParam.boundary = "region(" + region + "," + auto_extend + "," + result.latitude + "," + result.longitude + ")";
          if (options.sig) {
            requestParam.sig = Utils.getSig(requestParam, options.sig, 'search');
          }
        } else if (rectangle && !region) {
          //矩形搜索
          requestParam.boundary = "rectangle(" + rectangle + ")";
          if (options.sig) {
            requestParam.sig = Utils.getSig(requestParam, options.sig, 'search');
          }
          } else {
            requestParam.boundary = "nearby(" + result.latitude + "," + result.longitude + "," + distance + "," + auto_extend + ")";
          if (options.sig) {
            requestParam.sig = Utils.getSig(requestParam, options.sig, 'search');
          }
          }            
          wx.request(Utils.buildWxRequestConfig(options, {
              url: URL_SEARCH,
              data: requestParam
          }, 'search'));
      };
      Utils.locationProcess(options, locationsuccess);
  };

  /**
   * sug模糊检索
   *
   * @param {Object} options 接口参数对象
   * 
   * 参数对象结构可以参考
   * http://lbs.qq.com/webservice_v1/guide-suggestion.html
   */
  getSuggestion(options) {
      var that = this;
      options = options || {};
      Utils.polyfillParam(options);

      if (!Utils.checkKeyword(options)) {
          return;
      }

      var requestParam = {
          keyword: options.keyword,
          region: options.region || '全国',
          region_fix: options.region_fix || 0,
          policy: options.policy || 0,
          page_size: options.page_size || 10,//控制显示条数
          page_index: options.page_index || 1,//控制页数
          get_subpois : options.get_subpois || 0,//返回子地点
          output: 'json',
          key: that.key
      };
      //长地址
      if (options.address_format) {
        requestParam.address_format = options.address_format;
      }
      //过滤
      if (options.filter) {
        requestParam.filter = options.filter;
      }
      //排序
      if (options.location) {
        var locationsuccess = function (result) {
          requestParam.location = result.latitude + ',' + result.longitude;
          if (options.sig) {
            requestParam.sig = Utils.getSig(requestParam, options.sig, 'suggest');
          }
          wx.request(Utils.buildWxRequestConfig(options, {
            url: URL_SUGGESTION,
            data: requestParam
          }, "suggest"));      
        };
        Utils.locationProcess(options, locationsuccess);
      } else {
        if (options.sig) {
          requestParam.sig = Utils.getSig(requestParam, options.sig, 'suggest');
        }
        wx.request(Utils.buildWxRequestConfig(options, {
          url: URL_SUGGESTION,
          data: requestParam
        }, "suggest"));      
      }        
  };

  /**
   * 逆地址解析
   *
   * @param {Object} options 接口参数对象
   * 
   * 请求参数结构可以参考
   * http://lbs.qq.com/webservice_v1/guide-gcoder.html
   */
  reverseGeocoder(options) {
      var that = this;
      options = options || {};
      Utils.polyfillParam(options);
      var requestParam = {
          coord_type: options.coord_type || 5,
          get_poi: options.get_poi || 0,
          output: 'json',
          key: that.key
      };
      if (options.poi_options) {
          requestParam.poi_options = options.poi_options
      }

      var locationsuccess = function (result) {
          requestParam.location = result.latitude + ',' + result.longitude;
        if (options.sig) {
          requestParam.sig = Utils.getSig(requestParam, options.sig, 'reverseGeocoder');
        }
          wx.request(Utils.buildWxRequestConfig(options, {
              url: URL_GET_GEOCODER,
              data: requestParam
          }, 'reverseGeocoder'));
      };
      Utils.locationProcess(options, locationsuccess);
  };

  /**
   * 地址解析
   *
   * @param {Object} options 接口参数对象
   * 
   * 请求参数结构可以参考
   * http://lbs.qq.com/webservice_v1/guide-geocoder.html
   */
  geocoder(options) {
      var that = this;
      options = options || {};
      Utils.polyfillParam(options);

      if (Utils.checkParamKeyEmpty(options, 'address')) {
          return;
      }

      var requestParam = {
          address: options.address,
          output: 'json',
          key: that.key
      };

      //城市限定
      if (options.region) {
        requestParam.region = options.region;
      }

      if (options.sig) {
        requestParam.sig = Utils.getSig(requestParam, options.sig, 'geocoder');
      }

      wx.request(Utils.buildWxRequestConfig(options, {
          url: URL_GET_GEOCODER,
          data: requestParam
      },'geocoder'));
  };


  /**
   * 获取城市列表
   *
   * @param {Object} options 接口参数对象
   * 
   * 请求参数结构可以参考
   * http://lbs.qq.com/webservice_v1/guide-region.html
   */
  getCityList(options) {
      var that = this;
      options = options || {};
      Utils.polyfillParam(options);
      var requestParam = {
          output: 'json',
          key: that.key
      };

      if (options.sig) {
        requestParam.sig = Utils.getSig(requestParam, options.sig, 'getCityList');
      }

      wx.request(Utils.buildWxRequestConfig(options, {
          url: URL_CITY_LIST,
          data: requestParam
      },'getCityList'));
  };

  /**
   * 获取对应城市ID的区县列表
   *
   * @param {Object} options 接口参数对象
   * 
   * 请求参数结构可以参考
   * http://lbs.qq.com/webservice_v1/guide-region.html
   */
  getDistrictByCityId(options) {
      var that = this;
      options = options || {};
      Utils.polyfillParam(options);

      if (Utils.checkParamKeyEmpty(options, 'id')) {
          return;
      }

      var requestParam = {
          id: options.id || '',
          output: 'json',
          key: that.key
      };

      if (options.sig) {
        requestParam.sig = Utils.getSig(requestParam, options.sig, 'getDistrictByCityId');
      }

      wx.request(Utils.buildWxRequestConfig(options, {
          url: URL_AREA_LIST,
          data: requestParam
      },'getDistrictByCityId'));
  };

  /**
   * 用于单起点到多终点的路线距离(非直线距离)计算：
   * 支持两种距离计算方式：步行和驾车。
   * 起点到终点最大限制直线距离10公里。
   *
   * 新增直线距离计算。
   * 
   * @param {Object} options 接口参数对象
   * 
   * 请求参数结构可以参考
   * http://lbs.qq.com/webservice_v1/guide-distance.html
   */
  calculateDistance(options) {
      var that = this;
      options = options || {};
      Utils.polyfillParam(options);

      if (Utils.checkParamKeyEmpty(options, 'to')) {
          return;
      }

      var requestParam = {
          mode: options.mode || 'walking',
          to: Utils.location2query(options.to),
          output: 'json',
          key: that.key
      };

      if (options.from) {
        options.location = options.from;
      }

      //计算直线距离
      if(requestParam.mode == 'straight'){        
        var locationsuccess = function (result) {
          var locationTo = Utils.getEndLocation(requestParam.to);//处理终点坐标
          var data = {
            message:"query ok",
            result:{
              elements:[]
            },
            status:0
          };
          for (var i = 0; i < locationTo.length; i++) {
            data.result.elements.push({//将坐标存入
              distance: Utils.getDistance(result.latitude, result.longitude, locationTo[i].lat, locationTo[i].lng),
              duration:0,
              from:{
                lat: result.latitude,
                lng:result.longitude
              },
              to:{
                lat: locationTo[i].lat,
                lng: locationTo[i].lng
              }
            });            
          }
          var calculateResult = data.result.elements;
          var distanceResult = [];
          for (var i = 0; i < calculateResult.length; i++) {
            distanceResult.push(calculateResult[i].distance);
          }  
          return options.success(data,{
            calculateResult: calculateResult,
            distanceResult: distanceResult
          });
        };
        
        Utils.locationProcess(options, locationsuccess);
      } else {
        var locationsuccess = function (result) {
          requestParam.from = result.latitude + ',' + result.longitude;
          if (options.sig) {
            requestParam.sig = Utils.getSig(requestParam, options.sig, 'calculateDistance');
          }
          wx.request(Utils.buildWxRequestConfig(options, {
            url: URL_DISTANCE,
            data: requestParam
          },'calculateDistance'));
        };

        Utils.locationProcess(options, locationsuccess);
      }      
  };

/**
 * 路线规划：
 * 
 * @param {Object} options 接口参数对象
 * 
 * 请求参数结构可以参考
 * https://lbs.qq.com/webservice_v1/guide-road.html
 */
direction(options) {
  var that = this;
  options = options || {};
  Utils.polyfillParam(options);

  if (Utils.checkParamKeyEmpty(options, 'to')) {
    return;
  }

  var requestParam = {
    output: 'json',
    key: that.key
  };

  //to格式处理
  if (typeof options.to == 'string') {
    requestParam.to = options.to;
  } else {
    requestParam.to = options.to.latitude + ',' + options.to.longitude;
  }
  //初始化局部请求域名
  var SET_URL_DIRECTION = null;
  //设置默认mode属性
  options.mode = options.mode || MODE.driving;

  //设置请求域名
  SET_URL_DIRECTION = URL_DIRECTION + options.mode;

  if (options.from) {
    options.location = options.from;
  }

  if (options.mode == MODE.driving) {
    if (options.from_poi) {
      requestParam.from_poi = options.from_poi;
    }
    if (options.heading) {
      requestParam.heading = options.heading;
    }
    if (options.speed) {
      requestParam.speed = options.speed;
    }
    if (options.accuracy) {
      requestParam.accuracy = options.accuracy;
    }
    if (options.road_type) {
      requestParam.road_type = options.road_type;
    }
    if (options.to_poi) {
      requestParam.to_poi = options.to_poi;
    }
    if (options.from_track) {
      requestParam.from_track = options.from_track;
    }
    if (options.waypoints) {
      requestParam.waypoints = options.waypoints;
    }
    if (options.policy) {
      requestParam.policy = options.policy;
    }
    if (options.plate_number) {
      requestParam.plate_number = options.plate_number;
    }
  }

  if (options.mode == MODE.transit) {
    if (options.departure_time) {
      requestParam.departure_time = options.departure_time;
    }
    if (options.policy) {
      requestParam.policy = options.policy;
    }
  } 

  var locationsuccess = function (result) {
    requestParam.from = result.latitude + ',' + result.longitude;
    if (options.sig) {
      requestParam.sig = Utils.getSig(requestParam, options.sig, 'direction',options.mode);
    }
    wx.request(Utils.buildWxRequestConfig(options, {
      url: SET_URL_DIRECTION,
      data: requestParam
    }, 'direction'));
  };

  Utils.locationProcess(options, locationsuccess);
}
};

module.exports = QQMapWX;